Improvement in harrows



UNITED STATES PATENT OFFICE.

'MARK W. HOUSE, OF OLEVELANDfOHIO.

lMPROVEMENT IN HAR'ROWS.

Specification forming part of Letters Patent No. 29,885, dated September 4, 1860.

To all whom it may concern:

Be it known that 1, MARK W. HOUSE, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and Improved Iron Harrow; and I do hereby declare tbatthc following is a full and exact description thereof, reference being bad to the accompanying drawings, which form a part of this specification.

Figure 1 is a perspective view of my said improved barrow minus aportion of its teeth d d; Fig. 2, a plan .of said harrow minus the connecting center plates, 0 c; and the remaining drawings represent detached portions of said 'harrow.

In the construction of my said improved iron harrow I first take thin bars of wroughtiron of suitable length and bend them into 1 nearly the form of triangular sections, the

said sections 6 9 being of such a shape that they can be so united as to form the spokes and rim ot'awhcel. (Represented by Fig. 2 of the drawings.) I then securely combine the inner angles of said sections with each other by means of a pair of center plates, 0 c, and the necessary number of connecting-bolts, as represented in Fig. 1.

The draft-axle k, which may be of any desired size and-shape, may be secured to the central portions of the center-plates,c c, by

means of a flanged screw-shank and nut, or by any other method that may be preferred.

It will be perceived from the drawings that the rim portion 9 of each section of my improved harrow overlaps the adjoining section of the same a sufiicient distance to enable each tooth d to be combined with two of said sections by means of a clamp,f, and a wedge or key, It, as represented in the drawings, which method of combining the harrow-teeth with the sections of the barrow-frame adds greatly to the stiffness and strength of the barrow, while at the same time it reduces the expense of its construction.

Should it be deemed preferable, the inner angles of the sections 0 g of my improved harrow may be united to each other by means of a single cent-er plate, 0, and a series of stapleshaped bolts and screw-nuts.

What Iclaim as my invention, and desire to secure by Letters Patent, is-

Constructing a barrow of the respective parts represented in the accompanying drawings, when the said parts are combined with each other substantially in the manner herein setforth.

MARK W. HOUSE. YVitnesses:

J. A. ULAPP, D. K. CARTTER, Jr. 

